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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.